Californians Hope the Past Doesn't Repeat Itself

California has experienced two years of drought, and some scientists are predicting another 198. A paleoclimatologist at the University of California at Berkeley, B. Lynn Ingram, has studied the ocean's temperatures and microorganisms and suggests that California experienced a "megadrought" in medieval times that  lasted over 200 years. Ingram believes that the plentiful rain of the 20th century was historically unusual for the state known for growing produce in the Central Valley. Unfortunately for California, its economy in agriculture was formed during the rainy 1900s and is not necessarily prepared for a long period without rain.